CVE-2026-58191 PoC — Appium: Reflected XSS / arbitrary JS in @appium/base-driver /test/guinea-pig* routes

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-58191.yaml

Associated Vulnerability

Title: Appium: Reflected XSS / arbitrary JS in @appium/base-driver /test/guinea-pig* routes (CVE-2026-58191)
Description:Appium is a cross-platform automation framework for all kinds of apps, built on top of the W3C WebDriver protocol. Prior to 10.7.0, Appium's base-driver unconditionally mounts the /test/guinea-pig, /test/guinea-pig-scrollable, and /test/guinea-pig-app-banner routes, and compileLodashTemplate reflects the throwError query parameter, comments POST field, and User-Agent request header into HTML without escaping, allowing reflected cross-site scripting and arbitrary JavaScript execution on the server origin. This issue is fixed in version 10.7.0.

Description

Appium <= 10.7.0 contains a reflected XSS caused by unescaped reflection of throwError query parameter, comments POST field, and User-Agent header in base-driver routes, letting remote attackers execute arbitrary JavaScript, exploit requires crafted HTTP requests.

File Snapshot

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